Easily openable can lid

ABSTRACT

A can lid of a can provided with an easily openable opening means is disclosed wherein the can lid is equipped with a can lid which is fastened by winding tightly on the can main body and the top end opening of the can main body, a score section installed around the territory of the prearranged opening area and a tab for severing the score section. In the can lid, there is formed a protrusion protruding upward from the can lid in front of the can opening during manufacturing of the can lid, in which it is a collapsing protrusion where the protrusion elastically deforms into the can main body by depressing motion of the user and thereby enables forming of a concave section for easy insertion of the user&#39;s finger.

TECHNICAL FIELD

The present invention is related to a can which enables easy partialopening or full opening of the lid, and in particular to an easilyopenable can lid provided with a collapsing protrusion.

BACKGROUND ART

Generally, easily opening lids are required in cans and therefore canlids with easily openable means are installed.

However, in the case of cans provided with easily openable means, easyopening of the can is required but the gap between the handle tab andthe top panel of the can is very small and therefore the hooking of thefinger is not favorable and thus there is a tendency of it beingdifficult to open. As a countermeasure, a method of providing a concaveportion underneath the tab or a convex portion on the top surface of thecan and lifting the tab has been devised. However, if the depth of theconcave or convex portion becomes large, there is the problem of tabs ofother can lids being caught between the tab and can lid duringmanufacturing and return transportation and causing damage.

SUMMARY OF THE INVENTION

The present invention has been set forth to overcome the problems of theconventional cans where the object thereof is to provide a can lidprovided with an easily openable opening means in which hooking of thefinger is facilitated and where there are no problems duringmanufacturing or transportation.

To achieve the foregoing object, in the present invention in which a canlid of a can provided with an easily openable opening means equippedwith a can lid which is fastened by winding tightly on the can main bodyand the top end opening of the can main body, a score section isinstalled around the territory of the prearranged opening area and a tabfor severing the score section, where in said can lid, there is formed aprotrusion protruding upward from the can lid in front of the canopening during manufacturing of the can lid, in which it is a collapsingprotrusion where the protrusion elastically deforms into the can mainbody by depressing motion of the user and thereby enables forming of aconcave section for easy insertion of the user's finger. In addition, itis preferred that the end of the handle of said tab lies over thecollapsing protrusion.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 is a front view and a cross-sectional view of the can lidaccording to the preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the collapsing protrusion of the canlid of FIG. 1 depicting the before and after depression states; and

FIG. 3 is a perspective view showing the state after opening of the canlid of FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The preferred embodiments of the present invention will be described indetail with reference to the attached drawings. FIG. 1 depicts a partialopening can type provided with an easy opening means related to thepreferred embodiment of the present invention.

This partial opening type can is equipped with a cylindrical shaped mainbody (20) provided with a can bottom, not shown, and a can lid (1) whichis wound and fastened on the top end opening of the can main body. Thiscan lid (1) is provided with a lid main body (10) and a tab (4) forsevering the scored section (2) for the partial opening engraved on thelid main body (10).

The lid main body (10) is comprised of a circular-shaped panel (11), acircumference wall (12) which elevates from the circumference edge ofthe panel (11), and a curl portion (23) which extends outward from thecircumference wall (12) and gets wound together with the flange (21) ofthe can main body (20), where the partial opening score section (2) isformed on the circumference of the prearranged partial opening area (3)of the panel (11) and enables opening of the prearranged partial openingarea (3) of the panel (11).

In addition, on the panel (11) of the can lid (1), a collapsingprotrusion (5) which protrudes upward from the panel (11) is formedduring the manufacturing process. After manufacturing, this collapsingprotrusion (5) is elastically deformed and protrudes inward into the canmain body (20) about the boundary between the collapsing protrusion (5)and panel (11) by the depressing action of the user and thus provides aconcave section where a finger may be inserted.

The tab (4) is an oval shape and is fastened on the rivet (6) located onthe panel (11). This tab (4) is arranged such that the longitudinaldirection is along the direction of the diameter of the panel (11) andthe tab end (6 a) which severs the score section (2) is arranged nearthe score section (2), and the handle (6 b) for lifting the tab (4) isarranged on the panel (11). The rivet (6) is located between the tab end(6 a) and handle (6 b) toward the tab end (6 a). The handle (6 b) isring-shaped and a finger-hooking hole (6 c) is formed thereon. Thehandle (6 b) is arranged such that it lies over the collapsingprotrusion (5). At a free state, the tab (4) is fastened to the rivet ofthe panel (11) which is lower than the collapsing protrusion (5) andtherefore the handle (6 b) is initially at an elevated state and the farend of the handle is on top of the collapsing protrusion (5) and isabutting the collapsing protrusion (5) without a gap.

When the user depresses the collapsing protrusion (5), as depicted inFIG. 2, the collapsing protrusion elastically deforms and a gap isformed between the collapsing protrusion (5) and the far end of thehandle (6 b). In this case, the handle (6 b) abuts the boundary of thecollapsing protrusion (5) and thus a secure gap is formed. By providinga collapsing protrusion (5) as such, when the user depresses thecollapsing protrusion (5) to form a partial opening on the can, a gap isformed and thereby hooking of the finger is facilitated and as a result,a partial opening on the can may be easily formed. Therefore, becausethe collapsing protrusion (5) is not a concave shape during themanufacturing process of the can lid (1), it does not abut the handle (6b) of the tab or the gap is narrow and thus it is very difficult forother can lids to be inserted between the tab (4) and the panel (11)during the manufacturing process or transportation, and in turn theremay be no cases of damage from contact with other cans.

It is obviously preferred that there is typography (not shown) printedon the collapsing protrusion intended as instructions or a logo andadvertising.

In addition, as the material of the can lid (1), either one of aluminumor steel may be used. For the thickness of the panel, it is preferredthat the thickness remains thin for easy elastic deformation.

In the above preferred embodiment, the shape of the collapsingprotrusion is represented as a concentric circle. However, it is notlimited to this shape and namely, it may be of any construction that iseasily deformed and formed into a concave section by the depressing ofthe user. Also, although a can lid having a partial opening means hasbeen described, it is obvious that the present invention may be appliedto a can lid having a wholly opening means.

As described above in the present invention, by providing a collapsingprotrusion, gripping of the tab handle is facilitated and thereby theopening of the can is made easy.

Also, the collapsing protrusion is not a concave shape during themanufacturing process and therefore the gap of the handle of the tab isnarrow and thus it is difficult for other can lids to be insertedbetween the tab and panel during the manufacturing or transportationprocess and in turn there is no concern for the tab or concave portionbeing damaged from contact with other can lids.

1. An easy-opening can end comprising an end panel, a score line in saidend panel definding an openable panel portion; a pull tab defined by anose, a handle and a medial portion between said nose and handle; meansfor securing said medial portion to said end panel with said noseadjacent said score line, said end panel including a convexly upwardlyprojecting protrusion underlying and contiguous said handle, and meansdefinded by the material of said protrusion of elastically deformingsaid convexly upwardly projecting protrusion to an upwardly concavelyopening and downwardly projecting protrusion upon the application of adownwardly directed manually applied force to said convexly upwardlyprojecting protrusion to form a gap between said handle and saidelastically deformed upwardly concavely opening protrusion incident tosevering said score line by imparting a lifting force to said handle. 2.The easy-opening can end as defined in claim 1 wherein said handleoverlies said upwardly convexly projecting and upwardly concavelyopening protrusion incident to imparting a lifting force to said handle.3. The easy-opening can end as defined in claim 2 wherein said handle iscontiguous said upwardly convexly projecting protrusion and defines afinger gripping gap with said protrusion in the upwardly concavelyopening configuration thereof.